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x86/amd-iommu: Move compl-wait command building to own function 

This patch introduces a seperate function for building
completion-wait commands.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2011-04-06 10:53:48 +02:00
parent 6221f222c0
commit ded467374a
1 changed files with 8 additions and 3 deletions
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11
arch/x86/kernel/amd_iommu.c
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@ -383,6 +383,13 @@ irqreturn_t amd_iommu_int_handler(int irq, void *data)
*
****************************************************************************/
static void build_completion_wait(struct iommu_cmd *cmd)
{
memset(cmd, 0, sizeof(*cmd));
cmd->data[0] = CMD_COMPL_WAIT_INT_MASK;
CMD_SET_TYPE(cmd, CMD_COMPL_WAIT);
}
/*
* Writes the command to the IOMMUs command buffer and informs the
* hardware about the new command. Must be called with iommu->lock held.
@ -458,9 +465,7 @@ static int __iommu_completion_wait(struct amd_iommu *iommu)
{
struct iommu_cmd cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.data[0] = CMD_COMPL_WAIT_INT_MASK;
CMD_SET_TYPE(&cmd, CMD_COMPL_WAIT);
build_completion_wait(&cmd);
return __iommu_queue_command(iommu, &cmd);
}